Questions tagged [meteorology]

The study of how the earth's atmosphere works, including weather forecasting. Use this tag for questions about the earth's weather. When asking questions specifically about the atmosphere, also include the [atmosphere] tag.

Filter by
Sorted by
Tagged with
1
vote
1answer
47 views

Where can I get good raw meteorological data for Middle East?

I live in the Middle East and I am really fond of understanding meteorology and using raw data make my own weather predictions. However, a limitation I encounter here is that most raw meteorological ...
6
votes
1answer
108 views

Can someone help me identify this cloud formation?

These pictures were taken today in Oklahoma City and I am both baffled and curious as to what formation this may be. I was wondering if anyone had any idea? Thank you!
5
votes
0answers
40 views

Why does the Earth have six atmospheric bands? [duplicate]

I know that the earth has atmospheric banding like the gas giants. What I want to know is why six in specific? What physical processes or equations determine the number of atmospheric bands on a ...
1
vote
1answer
353 views

WRF: EPSG code or spatial reference for Lambert conformal, Mercator and polar stereographic projections [closed]

I'm building an R package (https://github.com/ibarraespinosa/wrftools) to read namelist.wps and return a dynamic map which you can make zoom. In my case, it would be very beneficial because writing a ...
2
votes
1answer
469 views

Required temperature difference between land and sea for sea breeze

What is the required temperature difference between the sea and the land in order to create a sea breeze? Is there any relation between the temperature difference and the sea breeze intensity? Is ...
5
votes
0answers
65 views

Can a tornado burn itself out?

I know that hurricanes can basically "burn" themselves out of energy if they get too strong, but can the same thing happen with a tornado?
7
votes
1answer
220 views

Who would know how to manage rainwater erosion on a sloped property?

I'm a meteorologist with little experience in hydrology. I'm studying my land with the rainwater flow patterns during heavy rain events and looking to manage the erosion, flash flooding, and ponding ...
2
votes
1answer
58 views

Calculating a cloud cover index based on comparison of horizontal and tilted irradiance from pyranometers

I have data from 2 pyranometers, one in the horizontal plane and one in a tilted plane. The relevance of the tilting relates to their useage in solar-power plants whereby the tilt is in the same plane ...
3
votes
2answers
96 views

Does the NWS actually name winter storms, or is this exclusive to the Weather Channel?

If you occasionally check the Weather Channel (either the smartphone app or online), you'll see they reference strong weather systems by name. (It only seems to be eastern storms.) I've always ...
12
votes
2answers
310 views

How to tell if fog is made out of water droplets or ice crystals?

I understand that clouds can be made out of water droplets and/or ice crystals. And that fog is nothing else than low-lying clouds. However, I've experienced fog in a wide ranges of temperatures. I ...
2
votes
1answer
158 views

Looking for global cloud cover animations or videos

I am looking for a video of global cloud cover. Something like an animated version of this image: (Originally presented at http://naturalearth.springercarto.com/ne3_data/8192/clouds/africa_clouds_8k....
1
vote
2answers
85 views

How should one compare the comfort of climates?

Is there a way to measure the overall feel of the weather for a place? Suppose that: Place A has Temperature $33^o C$, Humidity $57\%$, Wind $14\;km/hr$, and Precipitation $20\%$ Place B has ...
4
votes
1answer
40 views

What is an 'obstacle vista diagram'?

Currently I do some research about SODAR and at this paper, the author wrote (p. 1502f): A site should be relatively clear of obstacles that could act as potential fixed-echo reflectors. If that ...
2
votes
1answer
37 views

Where can I find detailed historical breakdowns of U.S. lightning fatalities on a year-by-year basis?

e.g. Something like this, but for historical years (preferably covering 1980-2007, since the NWS detailed lists only start from 2008). Location of strike, victim name, where the victim was at (under ...
4
votes
0answers
40 views

What are typical ranges of rainfall drop sizes, speeds, and areal or volume densities?

I'd like to look into the possibility of using a Raspberry Pi and the PiCam module to detect rain, and to try to make some measurements of droplet size and rate. This could be done using an LED flash ...
1
vote
1answer
391 views

Relationship between pressure, temperature and density in meterology

I have been learning meteorology a bit on my own, and one thing that never gets answered clearly is the relationship of pressure, temperature, and density. When I looked it up, the density of air at ...
4
votes
1answer
2k views

Can anyone recommend a good college level meteorology textbook?

I am trying to learn meteorology through self-study. I have found quite a few lectures on YouTube, but they tend to be for non-scientists. I have a strong engineering and physics background and am ...
3
votes
0answers
40 views

Will global Warming continue to produce winter storms in the Northeast US?

Will GW just cause more winter storms in Northeast US or will all of US have colder winters ? This winter in East TX we had three record cold snaps and I lost a lot of Camellia Japonica buds and ...
1
vote
0answers
61 views

Snow under Siberian High

The Siberian High is a very strong anticyclone present over Siberia in the winter. Cities like Irkutsk lie at its very center, yet Irkutsk has 18-20 days of snow per month in the winter. Shouldn't we ...
4
votes
1answer
187 views

What are the band names of the NCEP grib files?

I'm downloading .grib files from NCEP: ftp://nomads.ncdc.noaa.gov/GFS/analysis_only/ Each file has 315 bands. What are their names? Reproducibility with R: ...
11
votes
1answer
1k views

How to tell the difference between real rain and fake rain (cloud seeding)?

I live in a city where the pollution is bad, so bad that sometimes we get 'fake' rain (from cloud seeding). This may last for an extended period. There have been times before when it has “rained” and ...
1
vote
0answers
125 views

Why does hot air sink in the eye of a tropical cyclone? [duplicate]

We know that warm air rises in the atmosphere due to the reduced density of the parcel itself. But in the eye of a tropical cyclone the warm air sinks down and does not reach the surface, but gets ...
4
votes
1answer
149 views

Why would geostrophic theory be invoked in the tropics with regards to the MJO?

In this paper reviewing the Madden-Julian Oscillation, frequently geostrophic theory (or approximately geostrophic) is often invoked. However, for geostrophic theory to be invoked, $$Ro=\frac{U}{f_0L}&...
-1
votes
1answer
236 views

If Earth had rings would gravity exerted by Earth decrease?

If Earth had enough mass in its own rings, more than the weight of Earth: What could it decrease the gravity to? Would the atmosphere have more depth or be thinner? What would the weather be like? ...
0
votes
1answer
127 views

Does being in the air provide any protection from an asteroid?

How does radiation and shock waves from a radioactive asteroid or atomic explosion disperse throughout Earth's atmosphere? Are there specific areas on Earth that are less likely to receive the shock ...
9
votes
2answers
346 views

What are the sunniest places on Earth? (including oceans)

This question did arise when thinking on offshore solar power plants, what's their potential, and how efficient would they be compared with land based counterparts. Recently, it is becoming more ...
5
votes
2answers
999 views

Why do meteorological seasons start earlier than astronomical seasons?

In meteorology the seasons always start at the beginning of the month the astronomical seasons start. The astronomical seasons start around the 21st in a month so I guess it would make more sense to ...
4
votes
1answer
583 views

How would I use data to find specific humidity and mixing ratio?

I keep reviewing this table to compare and contrast my results: The parcel of air is at 35°C and a relative humidity of 43%. I used this online calculator and it stated that with these two factors ...
2
votes
1answer
294 views

Does the snow come from local moisture or transported moisture?

Currently there is a snow storm coming from Europe over the UK. This is drastically dropping the temperature and making it snow lots. Is the snow coming from moisture that has been brought over from ...
9
votes
1answer
190 views

Where did the daily temperature variation go?

Currently central and northern Europe are experiencing a very cold, false-spring like weather phenomenon. When i look at local weather charts, the daily temperature cycle seems to be completely gone, ...
2
votes
2answers
866 views

How do I convert kg·kg⁻¹ to ppbV (parts per billion volume)?

I am using the CAMS model output data to figure out the ground level ozone at a particular place. It is given in mass mixing ratio, and I want to convert to parts per billion volume mixing ratio (...
1
vote
0answers
55 views

Correlation between temperature and precipitable water in the tropical climate

Air temperature is known to correlate well with precipitable water at higher latitudes. What are the likely factors that degrade the correlation in the tropical monsoon climate?
3
votes
1answer
100 views

Can anyone explain this frost phenomenon?

Look at this amazing frost I woke up to in Sooke, BC, Canada. This was so very cool to wake up to.
4
votes
2answers
287 views

Is there any video evidence of animals raining from the sky?

I image most people have heard stories of fish, frogs, or other small animals raining from the sky. I found quite a few articles on line with many instances of such occurrences but they were mostly ...
2
votes
0answers
43 views

How to divide timeseries into normal periods in meteorology and climatology?

When analyzing hydrological and climatological timeseries/observations it is a common practice to compare statistics made on normal periods. As WMO calls them: "WMO Climatological Normals". These ...
1
vote
2answers
254 views

What is the highest balloons possible in a chain?

The BU60-1 balloon attained an altitude of 53.0 km (32.9 mi; 173,900 ft). Weather permitting, would a series of climbable balloons in a chain be able to be linked from the ground to that height of ...
6
votes
0answers
75 views

Science behind the groundhog day myth

The myth goes that if a groundhog sees his shadow on Feb 2, six more weeks of winter are yet to come, but if he doesn't, spring is just around the corner. I am wondering if there is any science ...
18
votes
2answers
5k views

Where is the calmest place on Earth?

I have done some research online, and I've found out that Antarctica has the calmest winds (lowest maximum wind speed) recorded on Earth. However, it is uninhabitable for human life. Other very calm ...
3
votes
1answer
108 views

CMIP5 multi-model ensemble, can it be shown as ensemble average?

Let’s say I have got 15 CMIP5 models’ outputs of a given variable e.g. temperature, for RCP6.5 (2020-2100) run. I want to plot how the temperature will change in the future 2020-2100 (scatter plot, x ...
1
vote
0answers
18 views

Is there such a thing as virtual barotropic?

In meteorological terminology within dynamics, there are usually one of two unique assumptions made: Baroclinic- density is a function of both temperature and pressure : $\rho(x,y,z,t)=\frac{P(x,y,z,...
11
votes
2answers
160 views

Water on Mars and Earth

If water on Earth came from meteorites, why doesn't Mars have substantial water? What made it more highly probable on Earth than on Mars?
1
vote
0answers
64 views

Where can I find climate analogs? [closed]

It is an unusual year where I'm at, I'd like to go and see similar climatological years for the north america, more particularly for average pressure, maybe 500mb or 700mb. How would I do this Edit:...
8
votes
4answers
137 views

How do I find the horizontal pressure level that divides the atmosphere into 2 layers of equal mass?

Surface pressure given is p = 1000 hPa. (the temperature along the atmosphere is constant (T = −10 °C; hydrostatic equilibrium assumed). I tried using the hypsometric equation to find the height of ...
1
vote
1answer
134 views

What percentage of cumulonimbus clouds create lightning?

I understand that cumulonimbus clouds can create lightning, but do not understand how many of them create lightning. I would assume that most multi-cell systems would have lightning, while single ...
3
votes
1answer
58 views

CMIP5 Historical experiments, what do they mean?

What are the main characteristics of CMIP5 Historical experiments? e.g. Initial conditions? Greenhouse gases forcing? How they differ from RCPs? And how they are similar to Observed reanalysis data?...
6
votes
1answer
2k views

How much rain falls on the Earth each year?

In this resource, it says that the average amount of precipitation falling on the Earth per year is approximately 100 cm. Integrated across the surface of the Earth, that yields approximately 5.1 × ...
6
votes
1answer
1k views

How to calculate humidity using outside temperature and outside relative humidity?

I would like to ask how to calculate the relative humidity that a heated indoor area would have using only outside temperature and outside relative humidity. I found the Relative Humidity Calculator ...
1
vote
0answers
43 views

classifying the actual weather data of Cfb climate to dry, normal and wet periods [closed]

I have 3 years weather data of a region in Austria, and I want to classify a year to dry, normal and wet periods, how I can analyse this data of such climate? Thanks
6
votes
1answer
138 views

Do Siberia and Canada have a rasputitsa?

The rasputitsa is a muddy season that happens twice per year in West Russia, Ukraine, and Belarus. It happens in mid-October to late November due to rains, and mid-March to late April due to thaws (...
2
votes
1answer
89 views

Are high velocity winds, or the lack of wind, the most common cause for low visibility?

Low visibility, say <1km (3300 ft), can be caused by fog when there is no/little wind present. On the other hand, high winds associated with blizzards or wildfires can also create low visibility ...